<template>
    <div>
        
        <!--使用面包屑导航区域-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!--卡片视图-->
        <el-card>
            <!--添加角色按钮区-->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
                </el-col>
            </el-row>

            <!--角色列表-->
            <el-table :data="rolelist" border stripe row-key="id"> 
                <!--展开列-->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row v-for="(item1,i1) in scope.row.children" :key="item1.id" :class="['bdbottom',i1===0 ? 'bdtop':'','vcenter']">
                            <!--渲染一级权限-->
                            <el-col :span="5">
                                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                             <!--渲染二级和三级权限-->
                            <el-col :span="19">
                                <el-row v-for="(item2,i2) in item1.children" :key="item2.id" :class="[i2===0 ? '':'bdtop','vcenter']">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col >
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                        <!--<pre>{{scope.row}}</pre>-->                  
                    </template>
                </el-table-column>

                <!--索引列-->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRolesById(scope.row.id)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!--添加用户的对话框  :visible.sync控制对话框的显示和隐藏-->
            <el-dialog
                title="添加角色"
                :visible.sync="addDialogVisible"  
                width="50%"
                @close="addDialogClosed"
            >
                <!--内容主体区  ref="addFormRef"是给表单起了一个引用名称      -->
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
                <el-form-item label="角色名称" prop="roleName"><!--prop验证规则属性-->
                    <el-input v-model="addForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc"><!--prop验证规则属性-->
                    <el-input v-model="addForm.roleDesc"></el-input>
                </el-form-item>
               
                </el-form>

                <!--底部区-->
                <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addRoles">确 定</el-button >  
                </span>

            </el-dialog>
            
            <!--修改用户的对话框-->
            <el-dialog
                title="修改角色"
                :visible.sync="editDialogVisible"
                width="50%" @close="editDialogClosed">
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" >
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="editForm.roleName" ></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
                </el-form>
                <span slot="footer" >
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editRolesInfo">确 定</el-button>
                </span>
            </el-dialog>

            <!--分配权限的对话框-->
            <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%" @close="setRightDialogClosed">

            <!--树形控件-->
            <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>

            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
            </el-dialog>

        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //所有角色列表数据
            rolelist:[],
            //所有权限的数据
            rightslist:[],
            //树形控件的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            //默认选中的节点Id值数组
            defKeys:[],
            addDialogVisible:false,
            //控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                roleName:'',
                roleDesc:'',
            },
            //添加表单的验证规则对象
            addFormRules:{
                roleName:[{required: true, message: '请输入角色名称', trigger: 'blur' },
                { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }],
                roleDesc:[{required: true, message: '请输入角色描述', trigger: 'blur' },
                { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }],
            },
            //控制修改角色对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{
                roleName:[{required: true, message: '请输入角色名称', trigger: 'blur' },
                { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }],
                roleDesc:[{required: true, message: '请输入角色描述', trigger: 'blur' },
                { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }],
            },
            //当前即将分配权限角色的id
            roleId:''
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        //获取所有角色的列表
        async getRolesList(){
            const {data:res}=await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败')
            }
            this.rolelist=res.data
            console.log(this.rolelist)
        },
        //监听添加角色对话框的关闭
        addDialogClosed(){
        this.$refs.addFormRef.resetFields()   //重置
        },
        //点击按钮，添加新角色
        addRoles(){
        this.$refs.addFormRef.validate(async valid=>{
            if(!valid) return
            //可以发起添加用户的网络请求
            const { data: res }=await this.$http.post('roles',this.addForm)
            if (res.meta.status !== 201){
            return this.$message.error('添加角色失败')
            }
            this.$message.success('添加角色成功')
            this.addDialogVisible=false //隐藏添加角色对话框
            this.getRolesList()
        })
        },
        //监听修改角色对话框的关闭事件
        editDialogClosed(){
        this.$refs.editFormRef.resetFields()
        },
        //展示编辑角色的对话框
        async showEditDialog(roleId){
        //console.log(id)
        const { data: res }=await this.$http.get('roles/'+roleId)
        if (res.meta.status !== 200){
            return this.$message.error('查询角色信息失败')
        }
        this.editForm=res.data
        this.editDialogVisible=true
        },
        //修改角色信息并提交
        editRolesInfo(){
        this.$refs.editFormRef.validate(async valid=>{
            if(!valid) return
            //发起修改角色信息的数据请求
            const { data: res } = await this.$http.put('roles/'+this.editForm.roleId,{roleName:this.editForm.roleName,roleDesc:this.editForm.roleDesc})
            if (res.meta.status !== 200){
            return this.$message.error('更新角色信息失败')
            }
            //关闭对话框
            this.editDialogVisible=false
            //刷新数据列表
            this.getRolesList()
            //提示修改成功
            this.$message.success('更新角色信息成功')
        })
        },
        //根据Id删除对应的角色信息
        async removeRolesById(roleId){
            //弹框询问用户是否删除数据  promise用 async await 接收返回值
            const confirmResult=await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err=>{
                return err
            })
            //如果角色确认删除，则返回值为字符串confirm
            //如果角色取消删除，则返回字符串cancel
            console.log(confirmResult)
            if(confirmResult!=='confirm'){
                return this.$message.info('已取消删除')
            }      
            const { data: res } = await this.$http.delete('roles/'+roleId)
            if (res.meta.status !== 200){
                return this.$message.error('删除角色失败')
            }
            //提示删除成功
                this.$message.success('删除角色信息成功')
            //刷新数据列表
            this.getRolesList()
        },
        //根据Id删除对应权限
        async removeRightById(role,rightId){
            //弹框提示用户是否要删除
            const confirmResult=await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err=>err)
            if(confirmResult!=='confirm'){
                return this.$message.info('取消了删除')
            }
            const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
            if(res.meta.status!==200){
                return this.$message.error('删除权限失败')
            }
            console.log(res.data)
            //this.getRolesList()  不要这样  因为会全部刷新
            role.children=res.data   //修改部分数据  展开列就不会合上  返回的data, 是当前角色下最新的权限数据
        },
        //展示分配权限的对话框
        async showSetRightDialog(role){
            this.roleId=role.id
            //获取所有权限的数据
            const {data:res}=await this.$http.get('rights/tree')
            if(res.meta.status!==200){
                return this.$message.error('获取权限数据失败')
            }
            //吧获取到的权限数据保存到data中
            this.rightslist=res.data
            console.log(this.rightslist)


            //递归获取三级节点的Id
            this.getLeafKeys(role,this.defKeys)

            this.setRightDialogVisible=true
        },
        //通过递归的形式，获取角色下所有三级权限id女兵保存到defKeys数组中
        getLeafKeys(node,arr){   
            //如果当前node节点不包含children属性，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item=>this.getLeafKeys(item,arr))
        },
        //监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]
        },
        //点击为角色分配权限
        async allotRights(){
            const keys=[...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()]//被全选和被半选的key(id)的数组
            const idStr=keys.join(',')
            const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
            if(res.meta.status!==200){
                return this.$message.error('分配权限数据失败')
            }
            this.$message.success('分配权限数据成功')
            //刷新数据列表
            this.getRolesList()
            this.setRightDialogVisible=false
        }

    
    }
}
</script>

<style lang="less" scoped>

</style>